Triangle Engineering, Inc.: Detailed Company Information & Corporate Profile
Summary
Triangle Engineering, Inc., founded in 1960, is an independent engineering firm headquartered in Hanover, MA. The company specializes in welding performance and testing solutions for clients across the Greater Boston region.
Its core services include welder performance qualification testing, weld procedure specification and qualification, weld performance materials, and both destructive and non‑destructive testing using specialized equipment.
With a team of 10 to 50 professionals, Triangle Engineering generates annual revenue in the $1–$10 million range and operates under SIC code 7380.
Leadership includes President Matt Coulstring, Buyer Faith Milks, Executive Assistant Heather Coulstring, Sales Engineer Justin Edwards, General Laborer Jim Golden, Welding Department Lead Nicholas McCarthy, Engineering Manager James Quinn, Mechanical Technician Dustin Dayhoff, and Engineer Jacob Ash.
| Triangle Engineering, Inc. Website | trieng.com |
| Phone Number | 781-878-1500 |
| Industries | |
| Triangle Engineering, Inc. Headquarters Address | 6 Industrial Way, Hanover, MA, 02339 US |
| Company Size | 10-50 employees |
| Specialities & Services | Welder Performance Qualification Testing, Weld Procedure Specification & Qualification, Weld Performance & Procedure Materials, Destructive Test Equipment, Destructive & Non Destructive Testing Services |
| SIC Code | 7380 |
| DMA Code | Greater Boston |
| Founded | 1960 |
| Estimated Annual Revenue | $1 - 10M |
| Operating Status | Independent Company |
| Updated: | 2026-09-29 |
Estimated Website Traffic
The chart shows a growth in traffic to the trieng.com website. In August, traffic increased to 19310, compared to 15393 in the previous month. The highest traffic in 2026 was recorded in March, reaching 28072 visits.
Workforce Turnover
Length of Employment
Triangle Engineering, Inc.'s workforce includes employees across a wide range of tenure levels.
17% have been with the company for 1 to 2 years17% have been with the company for 5 to 7 years17% have been with the company for 8 to 10 years50% have been with the company for more than 11 years
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Triangle Engineering, Inc. Corporate Information: FAQ
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